Shares of Dunkin' Brands (DNKN) fall 2.5% premarket after JPMorgan calls valuation "fair" and takes its rating down to Neutral on the name. In comparison to other high-growth restaurant stocks such as Starbucks, Chipotle, and Yum Brands that have been clipped by 10%-15% from their recent highs - Dunkin' Brands trades just 4% off of its own high.